On September $18,2023,$ Lael offered to give Telena a rare painting for free. Telena accepted Lael's offer. Lael never gives Telena the painting. Which of the following is true?

a$.$ Lael's promise to give the painting is an unenforceable promise.

b$.$ Lael's promise to give the painting is an enforceable promise.

c$.$ If Telena brings a lawsuit against Lael in court to receive the painting, the court will rule in favor of Telena because a contract was formed between the parties.